Anatomical bridge-articulator



L. G REENF|ELD. ANATOMICAL BRIDGE ARTICUL ATOR.

- APPLICATION FILED MAR- I2. I920- 1',a5a,oa9. I

Patented Sept. 14, 1920.

Q WWIW I .Lew; firaerzfiew @QW Q ATTORNEY WITNESS omrso STATE SfiP ATENT.QFFI E-I fLnon GREENFIELD,

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ANATCMICAL imrnen-nnrrcnraroit- V ,1,353,o39. f 'f i i To all whom mayconcern." r

Be it known that I, LEON GREENFIELD, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented new and useful Improvements in Anatomical Bridge-Articulators, of which the following is a specification. I V

This invention relates to anatomical devices used in the practice ofdentistry, and more particularly it relates to articulators.

'Some of the objects of the invention'are: to produce a device of thecharacter men- .tioned which is comparatively inexpensive;

one which isreliably efiectuahone which is simple of construction andwith which any dentist may perform a piece of work successfully sincethe device by reason of its construction maybe manipulated to obtain theprecise and proper occlusion which thus permits and leads up to theobtainment of ultimate proper articulation with false teeth in the mouthof an individual by such individual.

- In the drawing forming a part of this specification Figure 1 is aperspective view of the device.

Fig. 2 is a central longitudinal sectional view. 7

Referring now tothe drawing, it will be seen, that the device consistsof a pair of members 10'and 11 both of which are supported for movementby the member 12. The member 12 is U-shaped to provide a horizontallydisposed connecting portion 12 and sides 14 which are disposed inparallelism in spaced relation. The member 10 is.

made up from a single piece of material. The member 10 has an opening 15therein, and the side edges thereof converge toward the reducedextension 16. The extension 16 is provided with pintles 17 which arereceived in alining apertures 18 in the sides 14. Some of the materialfrom'which the member 10 is made, is bent and formed to provide a stop19 and a flexible or springlike extension 20 which is disposed'to coactwith the portion 13 of the member 12.

The extension 20 permits of the movement of the member 10 within acertain arc. The extreme end of'the extension 16 by coming intoengagement with the extension 20, which is in engagement with theportion 13,

limits the upward movement of the member 10, whereas, the extension 20and the speeificafion of Letters fl un Patented "se t. 14,1920. vApplication filed March 12, 1920. Serial m5. 365,262.

extension 16, in the movement of the member 10 downwardly, come togetherand engage the portion 13. thus-limiting the downward movement of themember 10. The member 10 is bent as at 21 and rebent as at 22. for apurpose to appear.

' The member 11 is made similarly to' the carried byth'e member 11 andco-actswith the stop 19, such feature together with'the fact that theU-shaped member .13, and the member 11. carried thereby, maybe movedupon the pintles 25 permits the obtainment of the proper occlusion inparticular cases. The member 11 is bent as at 28', and rebent as at 29.This latter feature of construction which, as is known, is also true ofthe other member 10 give the desired spread or pitch between the majortooth plate or 7 bridge supporting portions of the members 10 and 11 andat the same time give an approximate average anatomization. Byadjustment'of the screw 27, which as stated co-acts with the stop 19,and by shifting the member 11 and its supporting member 13,-

the precise and proper occlusion may be derived for the obtainment ofthe ultimate particularly desired articulation. What is claimed as newis 1. An anatomical articulator embodying a plurality of movablemembers, means ineluding a spring-like extension carried by one of saidmembers, a portion of said extension'being in yielding contact withanother of said members for yieldingly allowing two of said members tohave a relative compound movement.

2. An anatomical articulator including pivotally mounted members havingsupporting portions, a support for the members, means includin aspring-like extension carried by one of said members, a portion of saidextension being in yielding contact with the support for allowlng saidpivoted members to have a relative compound movement, laterally,longitudinally and vertically.

V 3. An anatomical articulator, embodying a plurality of movablemembers, means i eluding a spring-like extension carried by one ofsaidmembers, a portion of said extension being in yielding contact withanother of said members for yieldingly allowing two of said members tohave a relative compound movement, laterally, longitudinally andvertically; and means for varying the distance of vertical movement ofsaid members.

4. An anatomical articulator including a pair of pivoted members, anextension embodied by one of said members, said exten sion embodying ayieldable portion and a portion constituting'a stop, asupport for saidmembers, theyieldable portion being in contact with said support forallowing thepivoted members to yield when closed toithe limit, and anadjusting means which coac'tsf with said stop for varying the distanceof movement of said members toward each other. i p

5. An. anatomical articulator including pivoted members, a sprin-glikeextension integral with one of said members, a support for said memberswith which support said extension is in yielding contact; the pivotedmembershaving a relativecompound movement including the movement of oneof said'members toward and away from the said supporting vportions.

other member, and means for varying the members, meanscarried by one ofsaid membersadapted to 'coact with said support for yieldinglysupporting one of said mem- .bers, a nd means including a coactingscrewand stop for l1m1t1ng the movement of one of said members toward theother member and for obtaining varying spreadsbetween,

7. An anatomical articulator including a pair of members havmg universalrelative movement, and means for permitting'said movement of saldmembers including a sup- I porting member to which said members areplvoted, a sprlng-like extension integral with one of sand membersengageable with said support, a stop on one of said members and anadjusting means carried by the other member. v

In testimony whereof vI have affixed my signature.

LEON GREENFIELD.

